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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Patel, Jb
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Contrasting ultra-low frequency Raman and infrared modes in emerging metal halides for photovoltaicscitations
- 2023Contrasting charge-carrier dynamics across key metal-halide perovskite compositions through in situ simultaneous probescitations
- 2023A templating approach to controlling the growth of coevaporated halide perovskitescitations
- 2022De-Ironing of Aluminium Alloy Melts by High Shear Melt Conditioning Technology: An Overviewcitations
- 2021In-situ microstructural control of A6082 alloy to modify second phase particles by melt conditioned direct chill (MC-DC) casting process - A novel approachcitations
- 2021Efficient energy transfer mitigates parasitic light absorption in molecular charge-extraction layers for perovskite solar cellscitations
- 2021Limits to electrical mobility in lead-halide perovskite semiconductorscitations
- 2020Fe-Rich Intermetallic Formation and Mechanical Properties of Recycled AA6111 Alloy Strips Produced by Melt Conditioning Twin Roll Castingcitations
- 2020Metal composition influences optoelectronic quality in mixed-metal lead-tin triiodide perovskite solar absorberscitations
- 2020CsPbBr3 nanocrystal films: deviations from bulk vibrational and optoelectronic propertiescitations
- 2020Control over crystal size in vapor deposited metal-halide perovskite filmscitations
- 2019Solidification processing of scrap Al-alloys containing high levels of Fecitations
- 2018Multi-purpose high shear melt conditioning technology for effective melt quality and for recycling of Al-alloy scrap
- 2017Near-Infrared and short-wavelength infrared photodiodes based on dye-perovskite compositescitations
- 2017Identification of key liquid metal flow features in the physical conditioning of molten aluminium alloy with high shear processingcitations
- 2017Crystallization kinetics and morphology control of formamidinium-cesium mixed-cation lead mixed-halide perovskite via tunability of the colloidal precursor solutioncitations
- 2015Computational prediction of the refinement of oxide agglomerates in a physical conditioning process for molten aluminium alloycitations
- 2014Effect of melt conditioning on heat treatment and mechanical properties of AZ31 alloy strips produced by twin roll castingcitations
- 2009Solidification of Al-Sn-Cu based immiscible alloys under intense shearingcitations
- 2008Fabrication of metal matrix composites under intensive shearing
Places of action
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article
Contrasting charge-carrier dynamics across key metal-halide perovskite compositions through in situ simultaneous probes
Abstract
Metal-halide perovskites have proven to be a versatile group of semiconductors for optoelectronic applications, with ease of bandgap tuning and stability improvements enabled by halide and cation mixing. However, such compositional variations can be accompanied by significant changes in their charge-carrier transport and recombination regimes that are still not fully understood. Here, a novel combinatorial technique is presented to disentangle such dynamic processes over a wide range of temperatures, based on transient free-space, high-frequency microwave conductivity and photoluminescence measurements conducted simultaneously in situ. Such measurements are used to reveal and contrast the dominant charge-carrier recombination pathways for a range of key compositions: prototypical methylammonium lead iodide perovskite (MAPbI3), the stable mixed formamidinium-caesium lead-halide perovskite FA0.83Cs0.17PbBr0.6I2.4 targeted for photovoltaic tandems with silicon, and fully inorganic wide-bandgap CsPbBr3 aimed toward light sources and X-ray detector applications. The changes in charge-carrier dynamics in FA0.83Cs0.17PbBr0.6I2.4 across temperatures are shown to be dominated by radiative processes, while those in MAPbI3 are governed by energetic disorder at low temperatures, low-bandgap minority-phase inclusions around the phase transition, and non-radiative processes at room temperature. In contrast, CsPbBr3 exhibits significant charge-carrier trapping at low and high temperatures, highlighting the need for improvement of material processing techniques for wide-bandgap perovskites.